Storage battery.



No. 870,973. PATENTED NOV. 12, 1907. H. E. R. LITTLE.

STORAGE BATTERY.

APPLICATION FILED JAN.17, 1907.

INVENTOH Jfon-z fZTRJ iiZZe WITNESSES UNITED S A ES PATENT ,HOMER E. R.LITTLE, on NEW YORK, N. Y.

' STORAGE BA'r'rERY.

To all whom it iriuy concern:

Be it known that I, HOMER E. R. LITTLE, a citizen of the'United States,and a resident of New York city, borough of the Bronx, county and Stateof New York,

.have invented a new and. Improved Storage Battery,

of which the following is a full, clear, and exact description.

v This invention is directed to improvements in storage batteries, thenature of which provides foraconsiderable increase in electrical storagecapacityand a material 'reduction the weight of the cell, together withthe use of such active materials that the operation of the battery maybe economically carried on.

Storage gbatteries as usually constructed, especially those inwhich'lead or a compound thereof isernployed,

are comparatively heavy and the yield of amperehours characters ofreference indicate corres'ponding all the figures.- a

Figure l is a perspective view of one enibodirnent of my improvedbattery in transverse section; Fig. 2 is a section of the samesubstantially on the line 2-2 of Fig.

1, looking in the direction of the arrow,'and Fig- 3 is a front end viewof the cell. i

The battery as preferably constructed, coinprises a container or cell 1of glass, and of rectangular fonn as shown. The sides of the containeron their inner. faces are rabbeted to provide shoulders 2, and a similarlongitudinal rib 3 is tempted interniediate thereof, This constructionprovides a substantial'seat for supporting a positive electrode 4, thelatter being .of suchextent as to cover the entire cell, and consistsof. a 'porpus carbon body made up of endbars 5 and 6 connected togetherby one or more'c'rossbars .7, said crossbars .bein'g gprefr ably roundedoff on their top faces, as clearly disclosed in Fig. 2. The verticaldimension of the end biir 6 .is sufficient to carry it above the top ofthe, 714i within a short distance of the topedge of the.cell-. ti-Thisendsbar is constructed with a rabbeted portioniadjacefit to the side-ofthe cell,,an'd isprovided with agroovein its top face running itsfulllength, inwhicli conductor 7 is embedded". 1 This'conductor issecured in place by any suitable means; preferablybyelectrm plating acoat of metal 8 which incloses the conductor and extends in the rabbetedportion ur na es-tars 6.-

and at the opposite side thereof l-toathe bross -bars 7. Covering thiselectro-pla'ting isa thin; of paraf- ,fin 9 or any insulating materialwhich: tslt inclosed -byarubbercap 10.

Resting on the crossbars 7 of e we electrode 4 is a framework consistingof stripillhri anged adjacent Specification of Letters Patent.

A pplioatiou filed January 17. 1907- Ssrial Ho. 352.7l2.

the accompanying draw- .'lhese strips have openings 11 for the escape ofthe generated gases, and are rabbeted on their under faces for receivingthe ends of a hard, rubber, corrugated and res nted rrov. 12,1907.

perforated plate 12. This plate in connection with a crably made ofcarbonja nd consists ofend-bars 16 and- 17 joined together-by one ormore crossbar-s 18, the latter being rounded off on their under edges,as shown in Fig. 2. The end-bar 160i this electrode which is adjacent toone side of the container, is provided'with a longitudinal slot in itsface, in whichis embedded a conductor 19, which conductor is secured inplace by a coating of mcta1'20, preferably zinc, and

lectro-platcd thereon; 'lhe' conductors 7 and-19 .pass through openingsin one end of the cell, as shown in Fig. 3, additional openings 21 beingalso provided in "this end of the cell for the escape of generatedgases.

The interior of the cell heretofore described provides.

, for a chamber beneath the'lowercarbon of such size as the requiredcapacity of the cell demands. This chamber is completely filled-withcarbon, tetra-chlorid, bromoform, chloroform or any liquid 'solventofbromin of which-thespecifii; gravity is greater than a solution of zinc'bromid which is. thereafter poured into thecell to fill the intersticesand cover the greater portion of the upper and negative electrode.

ln charging the battery. the' zinc from the zinc bromid solution isdeposited on the electrode 15 and the. bi'ominis liberated atftheelectrode:4,-'and since itis of higher specific gravity, falls to thesurface of the carbqntetrachloridor other solution used, said solutionhaving the property of extracting bromin from a bromid solution. When acell iscompletely charged, the spacesbetween' thejlowei' carbonelectrode are filled nearly to the-top with a solution of carbon tetrachlorid and the bromin liberated from the zinc bromid at this P int.-

When the cell discharges, the bromin is withdrawn from the solution ofcarbon tetrachlorid and the zinc deposited on the negative electredeiiscombined therewith to -againform zinc bromid, this operation repeatedlytaking place on charging and discharging the battery.

Although I have described the preferred construci a i s i i tion, Iregard the precise embodiment of my invention as not material providedits essential characteristics are employed as pointedout in the annexedclaims.

Having thus described my invention I claim shadow and desire to secureby Letters Patent:

J 1. The combination of a cell, electrodes therein, a liquid rivatlve,and -when the cella'is discharged, the zinc and the radical elementtaken in solution by the halogen derivative are again combined.

2; The combination of a cell, electrodes therein, carbon tetra-chlorid,and a solution of a zinc salt or less specific gravitysupcrposed thereonin said cell, the carbon tetra chlorid being a solvent tor the radicaleiementof the salt, whereby when the cell is charged, the zinc isdeposited on one oi! the electrodes and the radical eiementot the salttaken in solution by the carbon tetra-chlorid, and when the cell isdischarged, the zinc and the radical element taken in solution by thecarbon tetra-chlorid are again combined.

3. The combination of a cell, an electrode horizontally disposedtherein, composed .ot end-bars connected together by side-bars, one ofsaid end-bars having an extended portion with a conductor connectedtherewith, a second electrode arranged in said cell above .the first andconsisting 0t end-bars connected together by cross-bars, a conductorconnected with said second electrode, and two perforated plates having afibrous material therebetween interposed between said electrodes formechanicaliy-as-' sisting in theseparation o! the liquids'employed inthe .35

cell.

' 4. The combination ot acell, electrodes therein, carbon -tetra-chioridin the bottom of the cell in contact with one -ot' said electrodes, anda solution or zinc-b'romid superposed on the carbon tetra-chlorid and incontact with the other electrode wherebywhen the cell, is charged thezinc from the zinc bromid. is deposited on the upper electrode and thebromin trom the zinc bromid is taken insolution by the carbontetrachlorid, and when the cell is discharged 'thezinc deposited on theupper electrode combines with the bromin taken in solution to againtorrn zinc bromid.

5. The combination ot a cell, electrodes therein, carbon te'tra-chloridin the bottom of the cell in contact with one of said electrodes, asolution of zinc bromid superposed on the carbon tetra-chlorid incontact with the other .electrode, and means interposed between theelectrodes "for mechanically assisting in the separation of the twoliquids, whereby when the cell i's charged, .the zinc from the zin'cbromid is deposited on the upper electrode and the bron in from 'thesincbromin is-taken in solution by the carbon tetra-chlorid,. and whenthe cell. is discharged the 'zinc deposited on the upper electrodecombineswith the bromin taken in solution to again form sincbromid.

6. The combination of a cell, a carbon electrode ,horizontally'disposedtherein, composed of end-bars connected together by side-bars, one ofsaid end-bars having an exteflded portion, a 'conductor embedded 'insaid extended portion, an electro-plating in contact therewith,: aninsulation surrounding the electroplating," a second electrode arrangedabove the first in contact with said insulation and consisting ofend-bars connected together by crossbars, a conductor embedded in saidsecond elec-,

trode, and electro-plating in contact therewith.

7. The combination of a cell, a carbon elect-rode horizo'ntaiiy disposedtherein comprising end-bars connected together by crossb'ars; one oi!said end-bars having an extended portion, a conductor embedded insaidfportion, electroplating covering said extended portion. incontactwith said conductor, an insulation covering said electroplating, .arubber cap titting'ov er said-iip sulation, a. second electrodeconsisting. end-bars connected together by crossbars arranged abovethefirst electrode and in contact with said rubber cap,. a conductor,embedded in said second electrode, eiectro-piating in contact with saidconductor,, and a layer of fibrous material interposed between saidelectrodes.

In testimony whereof I have signed-i19 I mama to'this specification inthe presence at two subscribing witnesses Holman. atrium Witnesses?

